A positivity-preserving central-upwind scheme for isentropic two-phase flows through deviated pipesGerardo Hernandez-Duenas, Ulises Velasco-García and Jorge X. Velasco-HernándezESAIM: M2AN, 53 5 (2019) 1433-1457DOI: https://doi.org/10.1051/m2an/2019003